mirror of
https://github.com/jart/cosmopolitan.git
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1bc48bc8e4
This commit and, by extension, PR attempts to update `stb` in the most straightforward way possible as well as include fixes from main repo's unmerged PRs for cases rearing their ugly heads during everyday usage: - stb#1299: stb_rect_pack: Make rect_height_compare a stable sort - stb#1402: stb_image: Fix "unused invalid_chunk" with STBI_FAILURE_USERMSG - stb#1404: stb_image: Fix gif two_back memory address - stb#1420: stb_image: Improve error reporting if file operations fail within *_from_file functions - stb#1445: stb_vorbis: Few static analyzers fixes - stb#1487: stb_vorbis: Fix residue classdata bounding for f->temp_memory_required - stb#1490: stb_vorbis: Fix broken clamp in codebook_decode_deinterleave_repeat - stb#1496: stb_image: Fix pnm only build - stb#1497: stb_image: Fix memory leaks if stbi__convert failed - stb#1498: stb_vorbis: Fix memory leaks in stb_vorbis - stb#1499: stb_vorbis: Minor change to prevent the undefined behavior - left shift of a negative value - stb#1500: stb_vorbis: Fix signed integer overflow Includes additional small fixes that I felt didn't warrant a separate PR.
117 lines
5 KiB
C
117 lines
5 KiB
C
#ifndef COSMOPOLITAN_THIRD_PARTY_STB_STB_IMAGE_H_
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#define COSMOPOLITAN_THIRD_PARTY_STB_STB_IMAGE_H_
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COSMOPOLITAN_C_START_
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enum {
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STBI_default = 0, // only used for desired_channels
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STBI_grey = 1,
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STBI_grey_alpha = 2,
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STBI_rgb = 3,
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STBI_rgb_alpha = 4
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};
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struct FILE;
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typedef struct {
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// fill 'data' with 'size' bytes. return number of bytes actually read
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int (*read)(void *user, char *data, int size);
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// skip the next 'n' bytes, or 'unget' the last -n bytes if negative
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void (*skip)(void *user, int n);
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// returns nonzero if we are at end of file/data
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int (*eof)(void *user);
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} stbi_io_callbacks;
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//
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// 8-bits-per-channel interface
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//
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unsigned char *stbi_load_from_memory(unsigned char const *buffer, int len,
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int *x, int *y, int *channels_in_file,
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int desired_channels) mallocesque;
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unsigned char *stbi_load_from_callbacks(stbi_io_callbacks const *clbk,
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void *user, int *x, int *y,
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int *channels_in_file,
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int desired_channels);
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unsigned char *stbi_load(char const *filename, int *x, int *y,
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int *channels_in_file, int desired_channels);
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unsigned char *stbi_load_from_file(struct FILE *f, int *x, int *y,
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int *channels_in_file, int desired_channels);
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// for stbi_load_from_file, file pointer is left pointing immediately after
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// image
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unsigned char *stbi_load_gif_from_memory(unsigned char const *buffer, int len,
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int **delays, int *x, int *y, int *z,
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int *comp, int req_comp);
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//
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// 16-bits-per-channel interface
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//
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unsigned short *stbi_load_16_from_memory(unsigned char const *buffer, int len,
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int *x, int *y, int *channels_in_file,
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int desired_channels);
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unsigned short *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk,
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void *user, int *x, int *y,
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int *channels_in_file,
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int desired_channels);
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unsigned short *stbi_load_16(char const *filename, int *x, int *y,
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int *channels_in_file, int desired_channels);
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unsigned short *stbi_load_from_file_16(struct FILE *f, int *x, int *y,
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int *channels_in_file,
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int desired_channels);
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// get a VERY brief reason for failure
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const char *stbi_failure_reason(void);
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// free the loaded image -- this is just free()
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void stbi_image_free(void *retval_from_stbi_load);
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// get image dimensions & components without fully decoding
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int stbi_info_from_memory(unsigned char const *buffer, int len, int *x, int *y,
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int *comp);
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int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x,
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int *y, int *comp);
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int stbi_is_16_bit_from_memory(unsigned char const *buffer, int len);
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int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *clbk, void *user);
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int stbi_info(char const *filename, int *x, int *y, int *comp);
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int stbi_info_from_file(struct FILE *f, int *x, int *y, int *comp);
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int stbi_is_16_bit(char const *filename);
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int stbi_is_16_bit_from_file(struct FILE *f);
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// for image formats that explicitly notate that they have premultiplied alpha,
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// we just return the colors as stored in the file. set this flag to force
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// unpremultiplication. results are undefined if the unpremultiply overflow.
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void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply);
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// indicate whether we should process iphone images back to canonical format,
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// or just pass them through "as-is"
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void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert);
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// flip the image vertically, so the first pixel in the output array is the
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// bottom left
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void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip);
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// ZLIB client - used by PNG, available for other purposes
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char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len,
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int initial_size, int *outlen);
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char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len,
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int initial_size,
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int *outlen,
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int parse_header);
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char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen);
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int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer,
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int ilen);
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char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len,
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int *outlen);
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int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen,
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const char *ibuffer, int ilen);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_THIRD_PARTY_STB_STB_IMAGE_H_ */
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